Vital-sign data statistics system and patient monitor

ABSTRACT

Provided are a patient monitor and vital-sign data statistics system, having vital-sign data statistics functionality. The patient monitor includes a signal acquisition module, a data processing module, and a display module. The data processing module processes the vital-sign signal acquired by the signal acquisition module and generates physiological parameters. If request information requesting to display a vital-sign data statistics result is received, then the data processing module statistically classifies the vital-sign data within a preset time range according to set type and a statistical item of each type, and displays the data by means of the display module.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/293,336, filed Mar. 5, 2019, for “VITAL-SIGN DATA STATISTICS SYSTEMAND MONITOR,” which is a continuation of Patent Cooperation Treaty (PCT)App. No. PCT/CN2016/098136, filed Sep. 5, 2016, for “VITAL-SIGN DATASTATISTICS SYSTEM AND MONITOR,” which is incorporated herein byreference.

TECHNICAL FIELD

The disclosure relates to a patient monitoring, and, in particular, to avital-sign data statistics system and patient monitor.

BACKGROUND ART

For clinical critical or sub-critical hospitalized patients, especiallyCCU and ICU patients, 24-hour monitoring is required. A patient monitorcan be used to analyze and display various physiological and/orpsychological parameters measured by one or more sensors connected tothe patient. These parameters may be displayed in the form of waveformsor numerical values, where the waveforms can display parameter valueswithin a certain period of time (e.g., 1 hour) and the numerical valuescan display current monitored values. Therefore, physicians can use thepatient monitor to monitor the physical condition of the patient andassess the physical condition of the patient according to the measuredparameters.

Physicians, when making ward rounds, need to know not only the currentphysiological parameters of the patients, but also the overall conditionof the patients for 24 hours or more and some special data that are ofguiding significance to medicine. However, existing patient monitors donot have this function, so that it is necessary for the physicians tomanually retrieve these data for manual statistics and analysis, whichnot only causes the physicians to spend much time and energy collatingand analyzing the data, but also is prone to errors in the statisticalprocess, causing the physicians to make wrong judgments.

BRIEF SUMMARY

According to one aspect, there is provided a vital-sign data statisticssystem including a request receiving unit for receiving requestinformation for requesting display of statistical results of vital signdata; a first acquisition unit for acquiring a time range of statisticaldata based on the request information; a statistical unit for applyingstatistics by category to the vital sign data within the time rangeaccording to set categories and statistical items of each of the setcategories; and a display unit for processing the statistical results ofeach category into visual data and displaying the visual data bycategory in a statistical result display area which is at least apartial area of a display interface.

According to another aspect, there is provided a patient monitorincluding a signal collection module for collecting vital sign signalsof a patient from the body of the patient; a data processing module,which is connected to the signal collection module and configured toprocess the vital sign signals and generating physiological parametersfor reflecting condition of the patient. The data processing module maybe further configured to receive request information for requestingdisplay of statistical results of vital sign data, acquire a time rangeof statistical data based on the request information, apply statisticsby category to the vital sign data within the time range according toset categories and statistical items of each of the set categories, andprocess the statistical results of each category into visual datacapable of being displayed in a statistical result display area which isat least a partial area of a display interface. The patient monitor mayalso include a display module, which is connected to the data processingmodule and configured to display the data output by the data processingmodule.

The vital sign data can be automatically and statistically analyzed bythe patient monitor according to the preset categories, and thestatistical analysis results can be intuitively presented to thephysician on a display screen. This adds additional functions to thepatient monitor, so that the patient monitor can not only assist thephysicians to quickly learn about the overall condition of the patientfor a relatively long time, but also saves the physician's time andenergy and plays a positive role in relieving the strain on medicalresources.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a patient monitor;

FIG. 2 is a schematic structural diagram of a vital-sign data statisticssystem;

FIG. 3 is a display interface of statistical results ofelectrocardiogram (ECG) data;

FIG. 4 is a schematic structural diagram of a vital-sign data statisticssystem;

FIG. 5 is a schematic diagram of a typical waveform selection;

FIG. 6 is a schematic diagram of ECG holographic waveforms; and

FIG. 7 is a flow chart of vital sign data statistics.

DETAILED DESCRIPTION

Specific embodiments are discussed in detail below in conjunction withthe accompanying drawings, where similar elements in various embodimentsare designated by associated similar reference numerals. In thefollowing embodiments, many details are described for the purpose offacilitating better understanding of the present application. However,it would be appreciated by those skilled in the art that some featuresmay be omitted or may be substituted by other elements, materials andmethods in different situations. In some cases, well-known operationsare not displayed or described in detail in order to avoid obscuringmore relevant aspects.

In addition, the characteristics, operations or features describedhereafter may be combined in any appropriate manner to form variousembodiments. Moreover, the steps or actions in the method descriptionmay also be changed or adjusted in sequence in a way that would beunderstood by those skilled in the art. Therefore, the various sequencesin the description and drawings are only for the purpose of clearlydescribing a certain embodiment and are not meant to imply a necessarysequence that must be followed, unless otherwise specified.

Embodiment I

Referring to FIG. 1, this embodiment provides a patient monitor 100 formonitoring a patient 150. The patient monitor 100 includes a dataprocessing module 110, a signal collection module 120, and a displaymodule 130.

One end of the signal collection module 120 is used for making contactwith the body of a patient from which vital sign signals of the patientare collected, such as pulse signals caused by heart beats, bodytemperature signals, blood absorption signals for light of a specificwave band, electrocardiogram (ECG) signals, electroencephalogram (EEG)signals, etc. The other end of the signal collection module 120 isconnected to the data processing module 110 via, for example, aninterface to input the vital sign signals to the data processing module110.

The data processing module 110 is connected to the signal collectionmodule 120 and the display module 130, respectively, and receives thevital sign signals, processes the vital sign signals, generatesphysiological parameters for reflecting the condition of the patient,and processes the physiological parameters into visual data. The visualdata are then sent to the display module 130, such that the displaymodule 130 displays the visual data on a display interface. Thephysiological parameters may include, for example, blood pressure, bloodoxygen saturation, heart rate, body temperature, electrocardiogram, etc.

The display module 130 includes a display screen providing the displayinterface, which display screen may be of a touch or non-touch variety.

In general, a patient monitor displays standard physiological parametersin a graphical or numerical manner on its display screen. In thisembodiment, the data processing module 110 further includes a vital-signdata statistics system. When a user (such as a physician) needs to viewthe summary and statistical analysis results of a patient for a longperiod of time, the vital-sign data statistics system performsstatistical analysis on the designated vital sign data within a set timerange according to the physician's request and displays the statisticalanalysis results on the display screen.

For example, a window displaying statistical analysis results can popup, which can be part of the display interface or the entire displayinterface. For example, the window displaying statistical analysisresults covers the display window of standard physiological parameters.The window of statistical analysis results can be closed by the userthrough operation, or the window of statistical analysis results can beautomatically closed after a set time without operation, and the displaywindow of standard physiological parameters can be re-displayed.

The designated vital sign data may be ECG data, pulse data, blood oxygensaturation data, EEG data, etc. The ECG data refer to parameterscalculated or statistically derived according to electrocardiogramsignals. The pulse data refer to parameters calculated or statisticallyderived according to pulse signals. The blood oxygen saturation datarefer to parameters calculated or statistically derived according toblood oxygen saturation signals. The EEG data are parameters calculatedor statistically derived according to EEG signals. Various vital signdata monitored are stored in memory, each including a numerical valueand a monitoring time.

The following describes one embodiment of the present disclosure bytaking statistical analysis of ECG data as an example.

In order to carry out statistical analysis on the ECG data, statisticalcategories of ECG data and statistical items of each category aredetermined in advance according to the items that physicians pay moreattention to. For example, a category table is maintained in advance inthe system, in which the statistical categories of the ECG data and thestatistical items of each category are recorded.

In this embodiment, the statistics of ECG data are divided into fourcategories, including heart rate, ST, QT/QTc and arrhythmia events. Inother embodiments, more categories or less categories of ECG data can becounted, and the statistical categories can include at least one ofheart rate, ST, QT/QTc and arrhythmia events, or can exclude any one ofheart rate, ST, QT/QTc and arrhythmia events.

For each category, statistical items thereof are also specified. Forexample, for heart rate, the statistical items thereof include the totalnumber of heart beats, average heart rate, the fastest heart rate andits occurrence time, and the slowest heart rate and its occurrence timein the current statistical period. For ST, the statistical items thereofinclude the ST elevation and depression frequency of each ECG lead inthe current statistical period, the maximum ST elevation and depressionvalues of each ECG lead and their occurrence time, etc. For QT/QTc, thestatistical items thereof include the maximum QT value, minimum QT valueand average QT value as well as the maximum QTc value, minimum QTc valueand average QTc value, etc. in the current statistical period. Forarrhythmia events, the statistical items thereof include all arrhythmiaevents occurring in the current statistical period and the total numberof occurrences of each type of arrhythmia events, etc. Of course, thoseskilled in the art will understand that in other embodiments,statistical items different from those in this embodiment can also beused, or statistical categories and/or statistical items can be designedto be selected by the user.

Referring to FIG. 2, a vital-sign data statistics system 200 includes arequest receiving unit 201, a first acquisition unit 202, a statisticalunit 203, a second acquisition unit 204, a third acquisition unit 205, afourth acquisition unit 206 and a display unit 207.

The request receiving unit 201 is configured to receive requestinformation for requesting display of statistical results of vital signdata. In one embodiment, the request information is generated based onthe selection operation of the user on the display interface, so therequest receiving unit 201 is connected to the display module 130, asshown by a solid line in FIG. 2.

In another embodiment, the request information is generated based on theswitching by the user of the state of an input unit provided on thepatient monitor, so the request receiving unit 201 is connected to theinput unit, which may be a button, a knob or slide switch havingdifferent settings, etc., as shown by a dashed line in FIG. 2. In thisembodiment, the request information is used to request display of thestatistical results of the ECG data.

The first acquisition unit 202 is connected to the request receivingunit 201 and is configured to acquire a time range of the statisticaldata based on the request information and output the acquired time rangeto the statistical unit 203. In one embodiment, the time range may be atime period preset in the system, such as the latest 24 hours, or thelatest 12 hours, etc. The first acquisition unit 202 may acquire thetime range of statistical data from a time setting table, as shown inFIG. 2.

In another embodiment, after receiving the request information, thefirst acquisition unit 202 may pop up a dialog window asking the user toinput a time range of statistical data, after which the firstacquisition unit 202 outputs the time range to the statistical unit 203.

The statistical unit 203 is configured to perform statistical analysisby category on the vital sign data within the time range according toset categories and statistical items of each of the set categories. Inthis embodiment, the statistical unit 203 is respectively connected tothe first acquisition unit 202 and the memory, receives the time rangeoutput by the first acquisition unit 202, and acquires the statisticalcategories of ECG data and statistical items of each category from thecategory table stored in the memory. In this embodiment, statistics bycategory are applied to ECG data such as heart rate, ST, QT/QTc andarrhythmia events. Therefore, ECG data of these categories within thistime range are read from the memory for statistical analysis, in whichvarious statistical items of heart rate, ST, QT/QTc and arrhythmiaevents are obtained through statistics and analysis, and the statisticalanalysis results are sent to the display unit 207.

The second acquisition unit 204 is configured to acquire specialstatistical items set for each category. Special statistical items areusually statistical items of greater importance, which play a role, tosome extent, in guiding the physicians to assess the patient'scondition. Special statistical items or no special statistical items maybe specified for a certain type of ECG data. In one embodiment, thespecial statistical items may also be specified in the category table,so the second acquisition unit 204 is also connected to the memory toread the special statistical items of each category from the categorytable stored in the memory.

For example, the special statistical items for heart rate are thefastest heart rate and the slowest heart rate, ST has no specialstatistical items, the special statistical items for QT/QTc are themaximum QT value, the minimum QT value, the maximum QTc value and theminimum QTc value, and the special statistical items for arrhythmiaevents are one or some arrhythmia events, such as cardiac arrest andsingle premature ventricular contraction. Those skilled in the artshould understand that the provisions for special statistical items canbe set according to different requirements. In practical application,default special statistical items of the system can be used, and thephysicians can also be allowed to modify the special statistical items.The second acquisition unit 204 is connected to the third acquisitionunit 205, and the second acquisition unit 204 outputs the specialstatistical items read from the memory to the third acquisition unit205.

The third acquisition unit 205 is also connected to the statistical unit203, and is used for acquiring the statistical results of the specialstatistical items in the statistical contents of each category. Forexample, for the special statistical item of fastest heart rate, thethird acquisition unit 205 acquires the fastest heart rate of 144 bpmfrom the statistical results of the heart rate, which occurs at09:01:00; for the special statistical item of slowest heart rate, thethird acquisition unit 205 acquires the slowest heart rate of 46 bpmfrom the statistical results of the heart rate, which occurs at04:01:00; and for the special statistical item of cardiac arrest, thenumber of cardiac arrests acquired by the third acquisition unit 205from the statistical results of arrhythmia is 53. The third acquisitionunit 205 is connected to the fourth acquisition unit 206 and transmitsthe obtained statistical results of the special statistical items to thefourth acquisition unit 206.

The fourth acquisition unit 206 is connected to the memory and thedisplay unit 207 respectively, extracts waveform data including apredetermined period of time (for example, 20 seconds or 30 seconds)around the statistical result of the special statistical item from theECG data within a preset time range, and sends the waveform data to thedisplay unit 207 as typical waveform data of the special statisticalitem.

The display unit 207 is configured to process the received data intovisual data to be displayed on the display interface. In thisembodiment, the display unit 207 is connected to the statistical unit203 and the fourth acquisition unit 206, respectively. In oneembodiment, the display unit 207 processes the statistical analysisresults of each category of ECG data sent from the statistical unit 203into visual data, and displays same by category in a statistical resultdisplay area, which is at least a partial area of a display interface.In another aspect, the display unit 207 processes the transmittedtypical waveform data into visual data to be respectively displayed in awaveform display area, which is at least a partial area of the displayinterface.

In this embodiment, the statistical result display area and the waveformdisplay area are two areas arranged vertically side by side on thedisplay interface, as shown in FIG. 3. The statistical result displayarea is divided into a plurality of sub-areas, each sub-area displayingthe statistical results of a category of ECG data. For example, in FIG.3, the statistical result display area is divided into a heart ratestatistics area S1, a ST statistics area S2, a QT/QTc statistics areaS3, and an arrhythmia statistics area S4. The waveform display area S5is also divided into several sub-areas, and each sub-area displaystypical waveform data of a special statistical item. In otherembodiments, the statistical result display area and the waveformdisplay area may also be two areas arranged horizontally side by side onthe display interface.

In this embodiment, after various vital sign data are classified forstatistics, the typical waveform of the special statistical item canalso be displayed according to the preset special statistical item, sothat physicians can check the waveform conditions before and after thespecial statistical item occurs and provide a visual basis for thephysicians to make comprehensive judgment.

Those skilled in the art should understand that in other embodiments,the vital-sign data statistics system 200 may not include the secondacquisition unit 204, the third acquisition unit 205, and the fourthacquisition unit 206, in which case the display interface will notdisplay the typical waveform data.

Embodiment II

This embodiment adds a typical waveform data setting function on thebasis of embodiment I. As shown in FIG. 4, the vital-sign datastatistics system 200 further includes a first positioning unit 208 andan updating unit 209.

The first positioning unit 208 is connected to the display module 130and is used for capturing a user's selection operation in the waveformdisplay area. The selection operation may be a click operation after theuser controls and moves a cursor to a predetermined position. When thedisplay module 130 includes a touch screen, the selection operation mayalso be a touch operation of the user at the predetermined position.After capturing the user's selection operation in the waveform displayarea, the first positioning unit 208 determines the special statisticalitem corresponding to the area selected by the user according to theposition coordinates of the selection operation. The first positioningunit 208 is also connected to the fourth acquisition unit 206 and sendsthe special statistical item corresponding to the area selected by theuser to the fourth acquisition unit 206.

The fourth acquisition unit 206 retrieves at least one relevant datumrelated to the statistical results of the special statistical item fromthe vital sign data within the preset time range, then extracts at leastone group of waveform data including a predetermined period of timearound the relevant datum, and takes the at least one group of waveformdata as alternative waveform data of the special statistical item andsends it to the display unit 207. The display unit 207 processes thetypical waveform data and the alternative waveform data of the specialstatistical item into visual data to be displayed in rows in a pop-upselection window and allows the user to select between the typicalwaveform data and the alternative waveform data. The relevant datum maybe data close to the statistical results of the special statisticalitem, for example, the special statistical item is the fastest/slowestheart rate, and the data close to the fastest/slowest heart rate is thesecond-fastest/second-slowest heart rate. A plurality of typical ECGwaveforms may be accordingly selected in this order for the user toselect, as shown in FIG. 5.

The update unit 209 is connected to the fourth acquisition unit 206 andthe display unit 207, respectively, and is configured to update thetypical waveform data initially displayed of the special statisticalitem to the typical waveform data selected by the user after receivingthe user's selection between a plurality of typical ECG waveforms.

This embodiment can allow the user to manually select a non-disturbedECG waveform as a typical waveform. When the user has questions aboutthe typical waveform of the special statistic item, he or she can touchor click on the area where the typical waveform of the specialstatistical item is located, so that the system will automaticallyselect a plurality of corresponding ECG waveforms according to theuser's requirements for the user to select, and set the waveformselected by the user as the typical ECG waveform to prevent one of thetypical waveforms from being a false aberration caused by interferenceof electrocardiogram signals.

Embodiment III

This embodiment adds the function of displaying holographic waveforms onthe basis of embodiments I and II. The vital-sign data statistics systemfurther includes a second positioning unit for capturing the selectionoperation of the user in the statistical result display area anddetermining the statistical item selected by the user according to theposition coordinates of the selection operation. The display unit popsup a holographic waveform display window of the vital sign data based onthe selection operation and processes the waveform related to thestatistical item selected by the user to be displayed in the currentwindow of the holographic waveform display window.

As shown in FIG. 6, when the user touches or clicks on the heart ratestatistics area, the system pops up a holographic waveform displaywindow. The so-called holographic waveform refers to the waveformincluding the waveform data of the entire statistical time range, whichcannot be displayed in a single two-dimensional graph due to the longtime and therefore are displayed in several two-dimensional graphsarranged vertically side by side by dividing the time period. Forexample, the waveform data of the first minute is displayed in the firsttwo-dimensional graph, the waveform data of the second minute isdisplayed in the second two-dimensional graph, and so on, until all thewaveform data of the entire statistical time range are displayed. Theuser can display preceding and succeeding waveforms through a scrollbar. Displaying holographic waveforms enables the physicians toconveniently view all ECG waveforms of the patients.

In one embodiment, in order to make it convenient for the physician toobserve the waveform of the special statistical item, the waveform of anoccurrence time of the special statistical item or the typical waveformof the special statistical item corresponding to the area selected bythe user is displayed in the current window of the holographic waveformdisplay window, so as to prevent the physicians from searching around.More preferably, the typical ECG waveform of a special statistical itemis marked on the holographic waveform, and the typical ECG waveform isenlarged and displayed in a lower area of the holographic waveformdisplay window, so as to facilitate observation by the physicians. Asshown in FIG. 6, when the user clicks on the heart rate statistics areaS1, a window is popped up displaying the electrocardiogram (ECG)holographic waveform, a one-minute ECG waveform including the occurrencetime of the fastest heart rate of the special statistical item in thefirst row of the window, with the typical ECG waveform of 7 seconds ofthe fastest heart rate marked with a rectangular frame on the one-minuteECG waveform, and an enlarged view of the typical ECG waveform isdisplayed in the lower area of the window.

Each of the above units may be formed as a separate module or integratedin the data processing module, the display unit may also be a part ofthe display module.

Embodiment IV

The vital-sign data statistics system can be implemented either byhardware, for example, by building an application specific integratedcircuit through gate circuits, or by a program stored in acomputer-readable medium and executed by a microprocessor. The flow of avital-sign data statistics method is shown in FIG. 7, including thefollowing steps.

In step 301, request information for requesting display of ECG datastatistical results is received.

In step 302, a time range of statistical data is acquired based on therequest information.

In step 303, statistics by category is applied to vital sign data withinthe time range according to set categories and statistical items of eachof the categories.

In step 304, the statistical results of each category are displayed bycategory in a statistical result display area, which is at least apartial area of a display interface.

In step 305, a special statistical item set for each category isacquired.

In step 306, statistical results of the special statistical item areacquired from statistical contents of each category.

In step 307, typical waveform data are extracted. Waveform dataincluding a predetermined period of time around the statistical resultsof the special statistical item are extracted from vital sign datawithin the time range, and the waveform data are taken as typicalwaveform data of the special statistical item.

In step 308, a typical waveform is displayed. The typical waveform dataof all the special statistical items are respectively displayed in awaveform display area which is at least a partial area of the displayinterface.

In step 309, a selection operation of a user in the display interface isdetected.

In step 310, when the selection operation of the user is detected, anarea selected by the user is determined according to positioncoordinates of the selection operation. When the selected area is awaveform display area, step 311 is executed, and when the selected areais a statistical result display area, step 314 is executed.

In step 311, alternative waveform data are extracted. According to theposition coordinates of the selection operation, the special statisticalitem corresponding to the area selected by the user is determined, atleast one group of waveform data including a predetermined period oftime around the relevant data are extracted, and the at least one groupof waveform data are taken as alternative waveform data of the specialstatistical item.

In step 312, an alternative waveform is displayed. The typical waveformdata and the alternative waveform data of the special statistical itemare all taken as options to be displayed in rows in a pop-up selectionwindow and the user is allowed to select between the typical waveformdata and the alternative waveform data.

In step 313, after receiving a selection of the user, the typicalwaveform data displayed in the waveform display area of the specialstatistical item are updated.

In step 314, an ECG holographic waveform is displayed. According to theposition coordinates of the selection operation, the statistical itemselected by the user is determined, a holographic waveform displaywindow of the vital sign data is popped up based on the selectionoperation, and the typical waveform of the special statistical itemselected by the user is displayed in the current window of theholographic waveform display window.

It will be understood by those skilled in the art that all or some ofthe steps of the various methods in the embodiments described abovecould be achieved by relevant hardware commanded by a program, whichprogram can be stored in a computer-readable storage medium. The storagemedium may include read-only memory, random memory, magnetic disk oroptical disk, etc. The data processing module can implement the abovefunctions by executing the program.

The present disclosure has been described in detail with reference tospecific examples, which are merely for the purpose of facilitatingunderstanding of the present disclosure and are not intended to limitthe present disclosure. It will be apparent to those skilled in the artthat changes may be made to the specific embodiments described above inaccordance with the teachings of the present disclosure.

What is claimed is:
 1. A vital-sign data statistics system, comprising: a request receiving unit, for receiving request information for requesting display of statistical results of vital sign data; a first acquisition unit, for acquiring a time range of statistical data based on the request information; a statistical unit, for applying statistics by category to the vital sign data within the time range according to set categories and statistical items of each of the set categories; and a display unit, for processing the statistical results of each category into visual data and displaying the visual data by category in a statistical result display area which is at least a partial area of a display interface; wherein the vital sign data are ECG data, and the statistics by category of the ECG data comprise statistics of arrhythmia events.
 2. The vital-sign data statistics system of claim 1, further comprising: a second acquisition unit, for acquiring a special statistical item set for each category; a third acquisition unit, for acquiring statistical results of the special statistical item from statistical contents of each category; and a fourth acquisition unit, for extracting waveform data comprising a predetermined period of time around an occurrence of the statistical results of the special statistical item from the vital sign data within the time range, and taking the waveform data as typical waveform data of the special statistical item; the display unit being further configured to process the typical waveform data of each special statistical item into the visual data and respectively display the visual data in a waveform display area which is at least a partial area of the display interface.
 3. The vital-sign data statistics system of claim 2, further comprising a first positioning unit and an updating unit, the first positioning unit being configured to capture a selection operation of a user in the waveform display area and determine the special statistical item corresponding to an area selected according to position coordinates of the selection operation; the fourth acquisition unit being configured to retrieve at least one relevant datum related to the special statistical item from the vital sign data within the time range, extract at least one group of waveform data comprising a predetermined period of time around a relevant datum, and take the at least one group of waveform data as alternative waveform data of the special statistical item; the display unit being further configured to process the typical waveform data and the alternative waveform data of the special statistical item into the visual data, display the visual data in rows in a pop-up selection window and allow the user to select between the typical waveform data and the alternative waveform data; and the updating unit being configured to update the typical waveform data of the special statistical item after receiving a selection of the user.
 4. The vital-sign data statistics system of claim 2, wherein the statistical result display area and the waveform display area are vertically or horizontally arranged side by side.
 5. The vital-sign data statistics system of claim 2, further comprising: a second positioning unit, for capturing a selection operation of a user in the statistical result display area and determining the special statistical item selected by the user according to position coordinates of the selection operation; the display unit being further configured to pop up a holographic waveform display window of the vital sign data based on the selection operation and display, in a current window of the holographic waveform display window, the waveform data at the time of occurrence or the typical waveform data of the special statistical item selected by the user.
 6. The vital-sign data statistics system of claim 2, wherein: at least one statistical category comprises a heart rate; the statistical result display area includes at least one statistical item for heart rate selected from the group consisting of a fastest heart rate and a slowest heart rate; and the waveform display area includes a heart rate waveform including a point in time at which a fastest or slowest heart rate was recorded as well as a period of time before and after the point in time at which the fastest or slowest heart rate was recorded.
 7. The vital-sign data statistics system of claim 6, wherein at least one of the statistical result display area and the waveform display area displays an occurrence time of the fastest heart rate or slowest heart rate.
 8. The vital-sign data statistics system of claim 2, wherein the display unit is configured to entirely cover a standard physiological parameter window with one or both of the statistical result display area and the waveform display area.
 9. The vital-sign data statistics system of claim 1, wherein the statistics by category of the ECG data further comprise statistics of at least one of heart rate, ST, and QT/QTc.
 10. The vital-sign data statistics system of claim 1, wherein the request information for requesting display of the statistical results of the vital sign data is generated based on a selection operation of a user on the display interface or based on switching of a state of an input unit provided on a monitor. 